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QxOrm
1.2.7
C++ Object Relational Mapping library
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00001 /**************************************************************************** 00002 ** 00003 ** http://www.qxorm.com/ 00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com) 00005 ** 00006 ** This file is part of the QxOrm library 00007 ** 00008 ** This software is provided 'as-is', without any express or implied 00009 ** warranty. In no event will the authors be held liable for any 00010 ** damages arising from the use of this software 00011 ** 00012 ** Commercial Usage 00013 ** Licensees holding valid commercial QxOrm licenses may use this file in 00014 ** accordance with the commercial license agreement provided with the 00015 ** Software or, alternatively, in accordance with the terms contained in 00016 ** a written agreement between you and Lionel Marty 00017 ** 00018 ** GNU General Public License Usage 00019 ** Alternatively, this file may be used under the terms of the GNU 00020 ** General Public License version 3.0 as published by the Free Software 00021 ** Foundation and appearing in the file 'license.gpl3.txt' included in the 00022 ** packaging of this file. Please review the following information to 00023 ** ensure the GNU General Public License version 3.0 requirements will be 00024 ** met : http://www.gnu.org/copyleft/gpl.html 00025 ** 00026 ** If you are unsure which license is appropriate for your use, or 00027 ** if you have questions regarding the use of this file, please contact : 00028 ** contact@qxorm.com 00029 ** 00030 ****************************************************************************/ 00031 00032 #ifndef _QX_DAO_POINTER_H_ 00033 #define _QX_DAO_POINTER_H_ 00034 00035 #ifdef _MSC_VER 00036 #pragma once 00037 #endif 00038 00046 #include <QtCore/qsharedpointer.h> 00047 #include <QtCore/qstringlist.h> 00048 00049 namespace qx { 00050 template <class T> QSharedPointer<T> clone_to_qt_shared_ptr(const T & obj); 00051 } // namespace qx 00052 00053 namespace qx { 00054 namespace dao { 00055 00056 namespace detail { 00057 template <class T> struct QxDao_IsDirty; 00058 } // namespace detail 00059 00125 template <typename T> 00126 class ptr 00127 { 00128 00129 private: 00130 00131 QSharedPointer<T> m_pWork; 00132 QSharedPointer<T> m_pOriginal; 00133 00134 public: 00135 00136 ptr() { ; } 00137 explicit ptr(T * ptr) : m_pWork(ptr) { ; } 00138 explicit ptr(T * ptr, T * original) : m_pWork(ptr), m_pOriginal(original) { ; } 00139 ptr(const qx::dao::ptr<T> & other) : m_pWork(other.m_pWork), m_pOriginal(other.m_pOriginal) { ; } 00140 ptr(const QSharedPointer<T> & other) : m_pWork(other) { ; } 00141 ptr(const QSharedPointer<T> & other, const QSharedPointer<T> & original) : m_pWork(other), m_pOriginal(original) { ; } 00142 ptr(const QWeakPointer<T> & other) : m_pWork(other) { ; } 00143 ptr(const QWeakPointer<T> & other, const QWeakPointer<T> & original) : m_pWork(other), m_pOriginal(original) { ; } 00144 virtual ~ptr() { ; } 00145 00146 template <typename Deleter> ptr(T * ptr, Deleter deleter) : m_pWork(ptr, deleter) { ; } 00147 template <typename Deleter> ptr(T * ptr, T * original, Deleter deleter) : m_pWork(ptr, deleter), m_pOriginal(original) { ; } 00148 00149 template <class X> ptr(const qx::dao::ptr<X> & other) : m_pWork(qSharedPointerCast<T>(other.m_pWork)), m_pOriginal(qSharedPointerCast<T>(other.m_pOriginal)) { ; } 00150 template <class X> ptr(const QSharedPointer<X> & other) : m_pWork(qSharedPointerCast<T>(other)) { ; } 00151 template <class X> ptr(const QSharedPointer<X> & other, const QSharedPointer<T> & original) : m_pWork(qSharedPointerCast<T>(other)), m_pOriginal(qSharedPointerCast<T>(original)) { ; } 00152 template <class X> ptr(const QWeakPointer<X> & other) : m_pWork(qSharedPointerCast<T>(other.toStrongRef())) { ; } 00153 template <class X> ptr(const QWeakPointer<X> & other, const QWeakPointer<X> & original) : m_pWork(qSharedPointerCast<T>(other.toStrongRef())), m_pOriginal(qSharedPointerCast<T>(original.toStrongRef())) { ; } 00154 00155 qx::dao::ptr<T> & operator=(const qx::dao::ptr<T> & other) { m_pWork = other.m_pWork; m_pOriginal = other.m_pOriginal; return (* this); } 00156 qx::dao::ptr<T> & operator=(const QSharedPointer<T> & other) { m_pWork = other; m_pOriginal.clear(); return (* this); } 00157 qx::dao::ptr<T> & operator=(const QWeakPointer<T> & other) { m_pWork = other; m_pOriginal.clear(); return (* this); } 00158 00159 template <class X> qx::dao::ptr<T> & operator=(const qx::dao::ptr<X> & other) { m_pWork = qSharedPointerCast<T>(other.m_pWork); m_pOriginal = qSharedPointerCast<T>(other.m_pOriginal); return (* this); } 00160 template <class X> qx::dao::ptr<T> & operator=(const QSharedPointer<X> & other) { m_pWork = qSharedPointerCast<T>(other); m_pOriginal.clear(); return (* this); } 00161 template <class X> qx::dao::ptr<T> & operator=(const QWeakPointer<X> & other) { m_pWork = qSharedPointerCast<T>(other.toStrongRef()); m_pOriginal.clear(); return (* this); } 00162 00163 inline T * get() const { return m_pWork.data(); } 00164 inline T * getOriginal() const { return m_pOriginal.data(); } 00165 inline T * data() const { return m_pWork.data(); } 00166 inline T * dataOriginal() const { return m_pOriginal.data(); } 00167 inline bool isNull() const { return m_pWork.isNull(); } 00168 inline operator bool() const { return (! m_pWork.isNull()); } 00169 inline bool operator!() const { return m_pWork.isNull(); } 00170 inline T & operator*() const { return (* m_pWork.data()); } 00171 inline T * operator->() const { return m_pWork.data(); } 00172 inline void clear() { m_pWork.clear(); m_pOriginal.clear(); } 00173 inline void reset() { m_pWork.clear(); m_pOriginal.clear(); } 00174 inline void reset(const QSharedPointer<T> & ptr) { m_pWork = ptr; m_pOriginal.clear(); } 00175 inline void resetOriginal(const QSharedPointer<T> & ptr) { m_pOriginal = ptr; } 00176 inline void saveToOriginal() { m_pOriginal.clear(); if (m_pWork) { m_pOriginal = qx::clone_to_qt_shared_ptr(* m_pWork); } } 00177 inline void restoreFromOriginal() { m_pWork.clear(); if (m_pOriginal) { m_pWork = qx::clone_to_qt_shared_ptr(* m_pOriginal); } } 00178 inline bool isDirty() const { QStringList lstDiff; return isDirty(lstDiff); } 00179 inline QSharedPointer<T> toQtSharedPointer() const { return m_pWork; } 00180 00181 template <class X> qx::dao::ptr<X> staticCast() const { return qx::dao::ptr<X>(m_pWork.template staticCast<X>(), m_pOriginal.template staticCast<X>()); } 00182 template <class X> qx::dao::ptr<X> dynamicCast() const { return qx::dao::ptr<X>(m_pWork.template dynamicCast<X>(), m_pOriginal.template dynamicCast<X>()); } 00183 template <class X> qx::dao::ptr<X> constCast() const { return qx::dao::ptr<X>(m_pWork.template constCast<X>(), m_pOriginal.template constCast<X>()); } 00184 00185 bool isDirty(QStringList & lstDiff) const 00186 { 00187 lstDiff.clear(); 00188 if (m_pWork.isNull() || m_pOriginal.isNull()) { lstDiff.append("*"); return true; } 00189 if (m_pWork == m_pOriginal) { return false; } 00190 qx::dao::detail::QxDao_IsDirty<T>::compare((* m_pWork), (* m_pOriginal), lstDiff); 00191 return (! lstDiff.isEmpty()); 00192 } 00193 00194 }; 00195 00196 } // namespace dao 00197 } // namespace qx 00198 00199 template<class T, class X> bool operator==(const qx::dao::ptr<T> & ptr1, const qx::dao::ptr<X> & ptr2) { return (ptr1.toQtSharedPointer() == ptr2.toQtSharedPointer()); } 00200 template<class T, class X> bool operator!=(const qx::dao::ptr<T> & ptr1, const qx::dao::ptr<X> & ptr2) { return (ptr1.toQtSharedPointer() != ptr2.toQtSharedPointer()); } 00201 template<class T, class X> bool operator==(const qx::dao::ptr<T> & ptr1, const X * ptr2) { return (ptr1.toQtSharedPointer() == ptr2); } 00202 template<class T, class X> bool operator!=(const qx::dao::ptr<T> & ptr1, const X * ptr2) { return (ptr1.toQtSharedPointer() != ptr2); } 00203 template<class T, class X> bool operator==(const T * ptr1, const qx::dao::ptr<X> & ptr2) { return (ptr1 == ptr2.toQtSharedPointer()); } 00204 template<class T, class X> bool operator!=(const T * ptr1, const qx::dao::ptr<X> & ptr2) { return (ptr1 != ptr2.toQtSharedPointer()); } 00205 00206 #endif // _QX_DAO_POINTER_H_